please show the formula, the numbers, and all calculations before providing the final answer.

Mr. Dave Jones manages the warehouse inventory for Athleticks, a distributor of sports watches. From his experience, Mr. Jones knows that the PR-5 jogging watch has an average daily demand of 200 units and a performance cycle of 10 days. Mr. Jones requires no buffer stock at this time.

a.) Assume Mr. Jones perpetually reviews inventory levels. Find the reorder point for the PR-5 jogging watch.

b.) Find the average inventory level of the PR-5 watch.